EP 1873579 A1 20080102 - Optical unit and liquid crystal display module
Title (en)
Optical unit and liquid crystal display module
Title (de)
Optische Einheit und Flüssigkristallanzeigemodul
Title (fr)
Unité optique et module d'affichage à cristaux liquides
Publication
Application
Priority
JP 2006175809 A 20060626
Abstract (en)
An object of the present invention is to provide an optical unit and a backlight unit which can markedly enhance utilization efficiency of rays of light and dramatically increase luminance, and which are suited for immediate beneath type liquid crystal display modules and the like. The optical unit of the present invention is a rectangular layered structural member having a reflection polarizing plate, an optical sheet superposed on the back face side of the reflection polarizing plate, and a transparent media layer filled between the reflection polarizing plate and the optical sheet. This optical sheet includes a resin substrate film having an optical anisotropy, and the absolute value of the angle of the crystal orientation of the substrate film with respect to the transmission axial orientation of the reflection polarizing plate is À/8 or greater and 3À/8 or less. The retardation value of the substrate film is preferably 70 nm or greater and 320 nm or less. The optical sheet preferably has an optical layer laminated on one face of the substrate film. The liquid crystal display module of the present invention has a liquid crystal display element, the optical unit, and an immediate beneath type backlight.
IPC 8 full level
G02F 1/13363 (2006.01)
CPC (source: EP KR US)
G02B 5/30 (2013.01 - KR); G02B 6/0056 (2013.01 - EP US); G02F 1/1335 (2013.01 - KR); G02F 1/13362 (2013.01 - EP US); G02F 1/13363 (2013.01 - KR); G02F 1/133536 (2013.01 - EP US); G02F 2202/40 (2013.01 - EP US)
Citation (applicant)
- JP 2005106959 A 20050421 - CASIO COMPUTER CO LTD
- JP H09506985 A 19970708
- JP 2000089007 A 20000331 - KEIWA INC
- JP 2004004970 A 20040108 - MITSUBISHI RAYON CO
- JP 2004004970 A 20040108 - MITSUBISHI RAYON CO
Citation (search report)
- [XY] JP 2005106959 A 20050421 - CASIO COMPUTER CO LTD
- [Y] US 2005063062 A1 20050324 - ITO YOJI [JP], et al
- [X] US 5422756 A 19950606 - WEBER MICHAEL F [US]
- [XP] US 2007076432 A1 20070405 - YANG XING-PENG [CN], et al
- [A] US 5587816 A 19961224 - GUNJIMA TOMOKI [JP], et al
- [A] US 5712694 A 19980127 - TAIRA KAZUKI [JP], et al
- [X] JP 2004319171 A 20041111 - KEIWA INC
- [X] US 7006173 B1 20060228 - HIYAMA IKUO [JP], et al
- [X] JP 2005091825 A 20050407 - NIPPON ZEON CO
- [A] EP 0720040 A2 19960703 - SHARP KK [JP]
Citation (examination)
- JP 2000019325 A 20000121 - TEIJIN LTD
- JP 2004341294 A 20041202 - KEIWA INC
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
EP 1873579 A1 20080102; CN 101097348 A 20080102; JP 2008003514 A 20080110; KR 100899995 B1 20090529; KR 20070122367 A 20071231; TW 200807029 A 20080201; TW I369513 B 20120801; US 2008123028 A1 20080529; US 8928843 B2 20150106
DOCDB simple family (application)
EP 07012030 A 20070620; CN 200710126245 A 20070626; JP 2006175809 A 20060626; KR 20070057173 A 20070612; TW 96118458 A 20070524; US 82172507 A 20070625